545953 has 4 divisors (see below), whose sum is σ = 556308. Its totient is φ = 535600.

The previous prime is 545947. The next prime is 545959. The reversal of 545953 is 359545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359545 = 5 ⋅71909.

It is an interprime number because it is at equal distance from previous prime (545947) and next prime (545959).

It can be written as a sum of positive squares in 2 ways, for example, as 471969 + 73984 = 687^2 + 272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5098 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (139077).

2⁵⁴⁵⁹⁵³ is an apocalyptic number.

545953 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

545953 is a deficient number, since it is larger than the sum of its proper divisors (10355).

545953 is a wasteful number, since it uses less digits than its factorization.

545953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10354.

The product of its digits is 13500, while the sum is 31.

The square root of 545953 is about 738.8863241392. The cubic root of 545953 is about 81.7306749796.

The spelling of 545953 in words is "five hundred forty-five thousand, nine hundred fifty-three".